Ajaokuta Steel Company Limited (ASCL) popularly known as Ajaokuta Steel Mill is a steel mill in Nigeria, located in Ajaokuta, Kogi State, Nigeria. Built on a 24,000 hectares (59,000 acres) site starting in 1979, [1] it is the largest steel mill in Nigeria, and the coke oven and byproducts plant are larger than all the refineries in Nigeria combined. [2]